Spring-link last



July '22, 1930. L. w. REINHARDT' 1,771,003

SPRING LINK LAST Filed Sept. 21, 1929 11 a for Int/111W 0 11M filter 20 tic example Patented July 22, 1930 r oFFIcE LOUIS W. BEINHARDT, OF BROCK'ION, MASSACHUSETTS, ASSIGNOR T GEORGE E.

BELGHER COMPANY, 0F STOUGI-ITON, MASSACHUSETTS, A CORPORATION OF MASSA- AppIication filed September 21, 1929.

My present invention relates to certain improvements in two part lasts. In its general construction and operation it embodies the principles of Letters Patent to Otto A. Peterson, No.1,195,266, patented August 22, 1916. In that last a resilient connecting link is used which in the form shown is a flat unitary member in practice made as a forging andv having just enough resiliency to provide for in the snapping by action characteristic of that last, so that the parts are held in either broken or extended position.

While my present invention contemplates a last working on the same principle, it provides for certain novel features in the construction of the'resilient link as will be more fully set forth in the specification which fol lows and as illustrated in the accompanying drawings. In these drawings a characterisof my link is shown as follows: Fig. 1 is a side view of a last in accordance with my invention. 7

Fig. 2 a view of the last collapsed and partly broken away to expose the link. Fig. 3 a side view of the link member; Fig. 4 an end View. r

Fig. 5 a section on the line 5-5,of Fig. 3 and Fig. 6 a bottom edge view of the link.

is indicated at 1 and the heel part at '2. The fore part 1 has a convex knuckle l0 and the rear part a concave member 12. The last is I provided with the usual jack or last pin receiving socket 3. The resilient link member generally indicated at 4 is'formed of sheet metal and comprises two leaves or folds 4 which pivotally fasten the links to the fore part and heel part as in said Peterson patent.

In the drawings the fore part of the last SPRING-LINK LAST Serial No. 394,282.

The notch 5 is made of sufficient length to leave a rather narrow arched portionat the. provides ust S115 center of the last which cient resiliency to permit the snapping by action characteristic of this type of last. The spacing oftheside platest of the extension 6 gives a somewhat wider. bearing on the pins 8andthese parts are accommodated in recesses 9 in the fore part and heel part of somewhat greater width than the slots in the original Peterson construction. I

In order'to reenforce the spaced sides 6 and to maintain theouter edges in spaced relation any suitable" bridging or reenforcing means may be-used, if desired. As shown the Outer corners 6 ,are bent inward so as to form stops to limit relative inward movement of the side 6 if subjected to pressure.

My link i's'capable of simple and inexpensive manufacture from sheet stock which can be struck out and bentand suificiently hardened and tempered to give it the desired strength and resiliency. In assembly the pins I 8 are driven so as to slightly tension the link which thus, holds the fore'part and heel part together with the knuckle members 10 and 12 contacting and thus take up any wear that may occur between these parts. My links 7 also provide great lateral strength in support Ing and guiding the last parts and makes posslble a "very neat and compact last structure and assembly. While the form shown is a preferred form it is capable of some varia tion in; design and may be made of other stock than sheet metal. althoughth at mate rial is indicated as preferred.

' What I therefore claimiand desire to secure' by Letters'Pat ent is:

' 1. In atwo part lastcomprising a fore part and'a heel part having cooperating pivot bearings, a resilient link pinned to the fore part and heel part at points which are in. a

line on'one side of the pivot when theilast is" extended and'on the other side when the last is-co'llapsed, said link comprising a sheet metal'member folded one line longitudinally of the last and havinga central cut out portion. 2. In a two part last comprising a fore part and" a-lieel part arranged 'forfrelative move ment about a common pivot, a connecting member comprising a pair of spaced plates integrally connected at one edge by a portion arched about an axis transverse of the axis of movement or" the last parts, said connecting member being connected to the two last parts at points which are on one side of the axis of movement of the last parts when in extended position, and at the other side of said axis when the last is collapsed.

3. In a two part last comprising a tore part and a heel part arranged for relative movement about a common axis, an integral resilient connecting member comprising a pair of vertically disposed spaced plates connected at one edge by portion arched about an axis transverse of the axis of movement of the last parts said plates being notched at their central portion to leave the arched portion as a resilient web the ends of said member being connected to the two last parts at points which are on one side of the axis of movement of the last parts when in extended position and at the other side of said axis when the last is collapsed.

i. A resilient link for a two part last comprising a member of U-shaped cross section having arelatively narrow central portion and extended end portions provided adjacent their terminals with pin bearings.

5. A connecting link for a two part last comprising a member of U-shaped' cross section including spaced sides provided adjacent to their ends with openings to receive pins to pivotally connect the member with the respective last parts, said sides being of sufficiently narrow width medially to provide for slight transverse resiliency of the member in a direction at right angles to the axis of said openings.

6. A connecting link for a two part last comprising a member composed of spaced side portions connected with one another and provided adjacent to their ends with openings to receive pins to pivotally connect the member with the respective last parts, said sides being of reduced width medially-to provide for slight transverse resiliency ofthe member in a direction at right angles to the axes of said openings.

'7. A connecting link for atwo part last comprising a member of U-shaped cross section including spaced sides provided adjacent to their ends with openings to receive pins to pivotally connect the member with the respective last parts, said sides being of suiticiently narrow width medially to provide for slight transverse resiliency of the member in a direction at right angles to the axes of said openings and means at free edge portions of the sides of said member to maintain said sides in spaced relation.

8. A. connecting link for a two part last comprising a member of U-shaped cross section including spaced sides provided adjacent to their ends with openings to receive pins to pivotaliy connect the member with the respective last parts, said sides being of suiiiciently narrow width medially to provide for slight transverse resiliency to the member in a direction at right angles to the axes of said openings, free edge portions of the sides of said member being bent inwardly to provide stop formations to limit inward movement of said sides relative to one another.

In testimony whereof I atfix my signature.

LOUIS V7. REINHARDT. 

